Azcondo, María TeresaRomero de Paz, JulioBoulahya, KhalidRitter, ClemensGarcía Alvarado, FlavianoAmador, Ulises2024-02-072024-02-0720151477-922610.1039/c4dt03112ahttps://hdl.handle.net/20.500.14352/99885We report the rich magnetic behaviour of Sr2CoNb1−xTixO6 (0 ≤ x ≤ 0.5) oxides as a result of their complex microstructure. Although these oxides show an average simple-cubic perovskite structure, they present a flexible microstructure due to short-range ordering between Co/Ti and Nb cations in the perovskite B-sites. The microstructure consists of double-cubic perovskite domains grown in a simple-cubic perovskite matrix. The size and number of the double-cubic perovskite domains decrease as the Ti content increases. As a result of aliovalent substitution of Nb5+ by Ti4+ in the parent Sr2CoNbO6 mixedvalence Co3+/Co4+ oxides are obtained. A spin glass-like state has been observed at low temperatures for all the series, with freezing temperatures increasing with the Ti-content in the range 22 to 33 K. Furthermore, the x = 0.3 and x = 0.5 samples show non-interacting superparamagnetic particle-like dynamics associated with relatively high amounts of Co4+, with “blocking temperatures” of 13 and ∼16 K, respectively. The complex magnetic behaviour of the title oxides seems to be connected with the clustering of magnetic Co3+ and the distribution of Co4+ as a result of the microstructure.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1477-9234https://doi.org/10.1039/C4DT03112Ametadata only access546Química inorgánica (Química)2303.26 Estructura de Los Compuestos Inorgánicos2303.29 Elementos de Transición